[mirror_ubuntu-focal-kernel.git] / drivers / video / tcx.c

/* tcx.c: TCX frame buffer driver
 *
 * Copyright (C) 2003 David S. Miller (davem@redhat.com)
 * Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz)
 * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
 * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
 *
 * Driver layout based loosely on tgafb.c, see that file for credits.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/fb.h>
#include <linux/mm.h>

#include <asm/io.h>
#include <asm/sbus.h>
#include <asm/oplib.h>
#include <asm/fbio.h>

#include "sbuslib.h"

/*
 * Local functions.
 */

static int tcx_setcolreg(unsigned, unsigned, unsigned, unsigned,
			 unsigned, struct fb_info *);
static int tcx_blank(int, struct fb_info *);

static int tcx_mmap(struct fb_info *, struct file *, struct vm_area_struct *);
static int tcx_ioctl(struct inode *, struct file *, unsigned int,
		     unsigned long, struct fb_info *);
static int tcx_pan_display(struct fb_var_screeninfo *, struct fb_info *);

/*
 *  Frame buffer operations
 */

static struct fb_ops tcx_ops = {
	.owner			= THIS_MODULE,
	.fb_setcolreg		= tcx_setcolreg,
	.fb_blank		= tcx_blank,
	.fb_pan_display		= tcx_pan_display,
	.fb_fillrect		= cfb_fillrect,
	.fb_copyarea		= cfb_copyarea,
	.fb_imageblit		= cfb_imageblit,
	.fb_mmap		= tcx_mmap,
	.fb_ioctl		= tcx_ioctl,
};

/* THC definitions */
#define TCX_THC_MISC_REV_SHIFT       16
#define TCX_THC_MISC_REV_MASK        15
#define TCX_THC_MISC_VSYNC_DIS       (1 << 25)
#define TCX_THC_MISC_HSYNC_DIS       (1 << 24)
#define TCX_THC_MISC_RESET           (1 << 12)
#define TCX_THC_MISC_VIDEO           (1 << 10)
#define TCX_THC_MISC_SYNC            (1 << 9)
#define TCX_THC_MISC_VSYNC           (1 << 8)
#define TCX_THC_MISC_SYNC_ENAB       (1 << 7)
#define TCX_THC_MISC_CURS_RES        (1 << 6)
#define TCX_THC_MISC_INT_ENAB        (1 << 5)
#define TCX_THC_MISC_INT             (1 << 4)
#define TCX_THC_MISC_INIT            0x9f
#define TCX_THC_REV_REV_SHIFT        20
#define TCX_THC_REV_REV_MASK         15
#define TCX_THC_REV_MINREV_SHIFT     28
#define TCX_THC_REV_MINREV_MASK      15

/* The contents are unknown */
struct tcx_tec {
	volatile u32 tec_matrix;
	volatile u32 tec_clip;
	volatile u32 tec_vdc;
};

struct tcx_thc {
	volatile u32 thc_rev;
        u32 thc_pad0[511];
	volatile u32 thc_hs;		/* hsync timing */
	volatile u32 thc_hsdvs;
	volatile u32 thc_hd;
	volatile u32 thc_vs;		/* vsync timing */
	volatile u32 thc_vd;
	volatile u32 thc_refresh;
	volatile u32 thc_misc;
	u32 thc_pad1[56];
	volatile u32 thc_cursxy;	/* cursor x,y position (16 bits each) */
	volatile u32 thc_cursmask[32];	/* cursor mask bits */
	volatile u32 thc_cursbits[32];	/* what to show where mask enabled */
};

struct bt_regs {
	volatile u32 addr;
	volatile u32 color_map;
	volatile u32 control;
	volatile u32 cursor;
};

#define TCX_MMAP_ENTRIES 14

struct tcx_par {
	spinlock_t		lock;
	struct bt_regs		__iomem *bt;
	struct tcx_thc		__iomem *thc;
	struct tcx_tec		__iomem *tec;
	volatile u32		__iomem *cplane;

	u32			flags;
#define TCX_FLAG_BLANKED	0x00000001

	unsigned long		physbase;
	unsigned long		fbsize;

	struct sbus_mmap_map	mmap_map[TCX_MMAP_ENTRIES];
	int			lowdepth;

	struct sbus_dev		*sdev;
	struct list_head	list;
};

/* Reset control plane so that WID is 8-bit plane. */
static void __tcx_set_control_plane (struct tcx_par *par)
{
	volatile u32 __iomem *p, *pend;
        
	if (par->lowdepth)
		return;

	p = par->cplane;
	if (p == NULL)
		return;
	for (pend = p + par->fbsize; p < pend; p++) {
		u32 tmp = sbus_readl(p);

		tmp &= 0xffffff;
		sbus_writel(tmp, p);
	}
}
                                                
static void tcx_reset (struct fb_info *info)
{
	struct tcx_par *par = (struct tcx_par *) info->par;
	unsigned long flags;

	spin_lock_irqsave(&par->lock, flags);
	__tcx_set_control_plane(par);
	spin_unlock_irqrestore(&par->lock, flags);
}

static int tcx_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
{
	tcx_reset(info);
	return 0;
}

/**
 *      tcx_setcolreg - Optional function. Sets a color register.
 *      @regno: boolean, 0 copy local, 1 get_user() function
 *      @red: frame buffer colormap structure
 *      @green: The green value which can be up to 16 bits wide
 *      @blue:  The blue value which can be up to 16 bits wide.
 *      @transp: If supported the alpha value which can be up to 16 bits wide.
 *      @info: frame buffer info structure
 */
static int tcx_setcolreg(unsigned regno,
			 unsigned red, unsigned green, unsigned blue,
			 unsigned transp, struct fb_info *info)
{
	struct tcx_par *par = (struct tcx_par *) info->par;
	struct bt_regs __iomem *bt = par->bt;
	unsigned long flags;

	if (regno >= 256)
		return 1;

	red >>= 8;
	green >>= 8;
	blue >>= 8;

	spin_lock_irqsave(&par->lock, flags);

	sbus_writel(regno << 24, &bt->addr);
	sbus_writel(red << 24, &bt->color_map);
	sbus_writel(green << 24, &bt->color_map);
	sbus_writel(blue << 24, &bt->color_map);

	spin_unlock_irqrestore(&par->lock, flags);

	return 0;
}

/**
 *      tcx_blank - Optional function.  Blanks the display.
 *      @blank_mode: the blank mode we want.
 *      @info: frame buffer structure that represents a single frame buffer
 */
static int
tcx_blank(int blank, struct fb_info *info)
{
	struct tcx_par *par = (struct tcx_par *) info->par;
	struct tcx_thc __iomem *thc = par->thc;
	unsigned long flags;
	u32 val;

	spin_lock_irqsave(&par->lock, flags);

	val = sbus_readl(&thc->thc_misc);

	switch (blank) {
	case FB_BLANK_UNBLANK: /* Unblanking */
		val &= ~(TCX_THC_MISC_VSYNC_DIS |
			 TCX_THC_MISC_HSYNC_DIS);
		val |= TCX_THC_MISC_VIDEO;
		par->flags &= ~TCX_FLAG_BLANKED;
		break;

	case FB_BLANK_NORMAL: /* Normal blanking */
		val &= ~TCX_THC_MISC_VIDEO;
		par->flags |= TCX_FLAG_BLANKED;
		break;

	case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
		val |= TCX_THC_MISC_VSYNC_DIS;
		break;
	case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
		val |= TCX_THC_MISC_HSYNC_DIS;
		break;

	case FB_BLANK_POWERDOWN: /* Poweroff */
		break;
	};

	sbus_writel(val, &thc->thc_misc);

	spin_unlock_irqrestore(&par->lock, flags);

	return 0;
}

static struct sbus_mmap_map __tcx_mmap_map[TCX_MMAP_ENTRIES] = {
	{
		.voff	= TCX_RAM8BIT,
		.size	= SBUS_MMAP_FBSIZE(1)
	},
	{
		.voff	= TCX_RAM24BIT,
		.size	= SBUS_MMAP_FBSIZE(4)
	},
	{
		.voff	= TCX_UNK3,
		.size	= SBUS_MMAP_FBSIZE(8)
	},
	{
		.voff	= TCX_UNK4,
		.size	= SBUS_MMAP_FBSIZE(8)
	},
	{
		.voff	= TCX_CONTROLPLANE,
		.size	= SBUS_MMAP_FBSIZE(4)
	},
	{
		.voff	= TCX_UNK6,
		.size	= SBUS_MMAP_FBSIZE(8)
	},
	{
		.voff	= TCX_UNK7,
		.size	= SBUS_MMAP_FBSIZE(8)
	},
	{
		.voff	= TCX_TEC,
		.size	= PAGE_SIZE
	},
	{
		.voff	= TCX_BTREGS,
		.size	= PAGE_SIZE
	},
	{
		.voff	= TCX_THC,
		.size	= PAGE_SIZE
	},
	{
		.voff	= TCX_DHC,
		.size	= PAGE_SIZE
	},
	{
		.voff	= TCX_ALT,
		.size	= PAGE_SIZE
	},
	{
		.voff	= TCX_UNK2,
		.size	= 0x20000
	},
	{ .size = 0 }
};

static int tcx_mmap(struct fb_info *info, struct file *file, struct vm_area_struct *vma)
{
	struct tcx_par *par = (struct tcx_par *)info->par;

	return sbusfb_mmap_helper(par->mmap_map,
				  par->physbase, par->fbsize,
				  par->sdev->reg_addrs[0].which_io,
				  vma);
}

static int tcx_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
		     unsigned long arg, struct fb_info *info)
{
	struct tcx_par *par = (struct tcx_par *) info->par;

	return sbusfb_ioctl_helper(cmd, arg, info,
				   FBTYPE_TCXCOLOR,
				   (par->lowdepth ? 8 : 24),
				   par->fbsize);
}

/*
 *  Initialisation
 */

static void
tcx_init_fix(struct fb_info *info, int linebytes)
{
	struct tcx_par *par = (struct tcx_par *)info->par;
	const char *tcx_name;

	if (par->lowdepth)
		tcx_name = "TCX8";
	else
		tcx_name = "TCX24";

	strlcpy(info->fix.id, tcx_name, sizeof(info->fix.id));

	info->fix.type = FB_TYPE_PACKED_PIXELS;
	info->fix.visual = FB_VISUAL_PSEUDOCOLOR;

	info->fix.line_length = linebytes;

	info->fix.accel = FB_ACCEL_SUN_TCX;
}

struct all_info {
	struct fb_info info;
	struct tcx_par par;
	struct list_head list;
};
static LIST_HEAD(tcx_list);

static void tcx_init_one(struct sbus_dev *sdev)
{
	struct all_info *all;
	int linebytes, i;

	all = kmalloc(sizeof(*all), GFP_KERNEL);
	if (!all) {
		printk(KERN_ERR "tcx: Cannot allocate memory.\n");
		return;
	}
	memset(all, 0, sizeof(*all));

	INIT_LIST_HEAD(&all->list);

	spin_lock_init(&all->par.lock);
	all->par.sdev = sdev;

	all->par.lowdepth = prom_getbool(sdev->prom_node, "tcx-8-bit");

	sbusfb_fill_var(&all->info.var, sdev->prom_node, 8);
	all->info.var.red.length = 8;
	all->info.var.green.length = 8;
	all->info.var.blue.length = 8;

	linebytes = prom_getintdefault(sdev->prom_node, "linebytes",
				       all->info.var.xres);
	all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);

	all->par.tec = sbus_ioremap(&sdev->resource[7], 0,
			     sizeof(struct tcx_tec), "tcx tec");
	all->par.thc = sbus_ioremap(&sdev->resource[9], 0,
			     sizeof(struct tcx_thc), "tcx thc");
	all->par.bt = sbus_ioremap(&sdev->resource[8], 0,
			     sizeof(struct bt_regs), "tcx dac");
	memcpy(&all->par.mmap_map, &__tcx_mmap_map, sizeof(all->par.mmap_map));
	if (!all->par.lowdepth) {
		all->par.cplane = sbus_ioremap(&sdev->resource[4], 0,
				     all->par.fbsize * sizeof(u32), "tcx cplane");
	} else {
		all->par.mmap_map[1].size = SBUS_MMAP_EMPTY;
		all->par.mmap_map[4].size = SBUS_MMAP_EMPTY;
		all->par.mmap_map[5].size = SBUS_MMAP_EMPTY;
		all->par.mmap_map[6].size = SBUS_MMAP_EMPTY;
	}

	all->par.physbase = 0;
	for (i = 0; i < TCX_MMAP_ENTRIES; i++) {
		int j;

		switch (i) {
		case 10:
			j = 12;
			break;

		case 11: case 12:
			j = i - 1;
			break;

		default:
			j = i;
			break;
		};
		all->par.mmap_map[i].poff = sdev->reg_addrs[j].phys_addr;
	}

	all->info.flags = FBINFO_DEFAULT;
	all->info.fbops = &tcx_ops;
#ifdef CONFIG_SPARC32
	all->info.screen_base = (char __iomem *)
		prom_getintdefault(sdev->prom_node, "address", 0);
#endif
	if (!all->info.screen_base)
		all->info.screen_base = sbus_ioremap(&sdev->resource[0], 0,
				     all->par.fbsize, "tcx ram");
	all->info.par = &all->par;

	/* Initialize brooktree DAC. */
	sbus_writel(0x04 << 24, &all->par.bt->addr);         /* color planes */
	sbus_writel(0xff << 24, &all->par.bt->control);
	sbus_writel(0x05 << 24, &all->par.bt->addr);
	sbus_writel(0x00 << 24, &all->par.bt->control);
	sbus_writel(0x06 << 24, &all->par.bt->addr);         /* overlay plane */
	sbus_writel(0x73 << 24, &all->par.bt->control);
	sbus_writel(0x07 << 24, &all->par.bt->addr);
	sbus_writel(0x00 << 24, &all->par.bt->control);

	tcx_reset(&all->info);

	tcx_blank(0, &all->info);

	if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
		printk(KERN_ERR "tcx: Could not allocate color map.\n");
		kfree(all);
		return;
	}

	fb_set_cmap(&all->info.cmap, &all->info);
	tcx_init_fix(&all->info, linebytes);

	if (register_framebuffer(&all->info) < 0) {
		printk(KERN_ERR "tcx: Could not register framebuffer.\n");
		fb_dealloc_cmap(&all->info.cmap);
		kfree(all);
		return;
	}

	list_add(&all->list, &tcx_list);

	printk("tcx: %s at %lx:%lx, %s\n",
	       sdev->prom_name,
	       (long) sdev->reg_addrs[0].which_io,
	       (long) sdev->reg_addrs[0].phys_addr,
	       all->par.lowdepth ? "8-bit only" : "24-bit depth");
}

int __init tcx_init(void)
{
	struct sbus_bus *sbus;
	struct sbus_dev *sdev;

	if (fb_get_options("tcxfb", NULL))
		return -ENODEV;

	for_all_sbusdev(sdev, sbus) {
		if (!strcmp(sdev->prom_name, "SUNW,tcx"))
			tcx_init_one(sdev);
	}

	return 0;
}

void __exit tcx_exit(void)
{
	struct list_head *pos, *tmp;

	list_for_each_safe(pos, tmp, &tcx_list) {
		struct all_info *all = list_entry(pos, typeof(*all), list);

		unregister_framebuffer(&all->info);
		fb_dealloc_cmap(&all->info.cmap);
		kfree(all);
	}
}

int __init
tcx_setup(char *arg)
{
	/* No cmdline options yet... */
	return 0;
}

module_init(tcx_init);

#ifdef MODULE
module_exit(tcx_exit);
#endif

MODULE_DESCRIPTION("framebuffer driver for TCX chipsets");
MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/* tcx.c: TCX frame buffer driver
	2	*
	3	* Copyright (C) 2003 David S. Miller (davem@redhat.com)
	4	* Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz)
	5	* Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
	6	* Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
	7	*
	8	* Driver layout based loosely on tgafb.c, see that file for credits.
	9	*/
	10
	11	#include <linux/module.h>
	12	#include <linux/kernel.h>
	13	#include <linux/errno.h>
	14	#include <linux/string.h>
	15	#include <linux/slab.h>
	16	#include <linux/delay.h>
	17	#include <linux/init.h>
	18	#include <linux/fb.h>
	19	#include <linux/mm.h>
	20
	21	#include <asm/io.h>
	22	#include <asm/sbus.h>
	23	#include <asm/oplib.h>
	24	#include <asm/fbio.h>
	25
	26	#include "sbuslib.h"
	27
	28	/*
	29	* Local functions.
	30	*/
	31
	32	static int tcx_setcolreg(unsigned, unsigned, unsigned, unsigned,
	33	unsigned, struct fb_info *);
	34	static int tcx_blank(int, struct fb_info *);
	35
	36	static int tcx_mmap(struct fb_info , struct file , struct vm_area_struct *);
	37	static int tcx_ioctl(struct inode , struct file , unsigned int,
	38	unsigned long, struct fb_info *);
6ee7c152	39	static int tcx_pan_display(struct fb_var_screeninfo , struct fb_info );
1da177e4 LT	40
	41	/*
	42	* Frame buffer operations
	43	*/
	44
	45	static struct fb_ops tcx_ops = {
	46	.owner = THIS_MODULE,
	47	.fb_setcolreg = tcx_setcolreg,
	48	.fb_blank = tcx_blank,
6ee7c152	49	.fb_pan_display = tcx_pan_display,
1da177e4 LT	50	.fb_fillrect = cfb_fillrect,
	51	.fb_copyarea = cfb_copyarea,
	52	.fb_imageblit = cfb_imageblit,
	53	.fb_mmap = tcx_mmap,
	54	.fb_ioctl = tcx_ioctl,
1da177e4 LT	55	};
	56
	57	/* THC definitions */
	58	#define TCX_THC_MISC_REV_SHIFT 16
	59	#define TCX_THC_MISC_REV_MASK 15
	60	#define TCX_THC_MISC_VSYNC_DIS (1 << 25)
	61	#define TCX_THC_MISC_HSYNC_DIS (1 << 24)
	62	#define TCX_THC_MISC_RESET (1 << 12)
	63	#define TCX_THC_MISC_VIDEO (1 << 10)
	64	#define TCX_THC_MISC_SYNC (1 << 9)
	65	#define TCX_THC_MISC_VSYNC (1 << 8)
	66	#define TCX_THC_MISC_SYNC_ENAB (1 << 7)
	67	#define TCX_THC_MISC_CURS_RES (1 << 6)
	68	#define TCX_THC_MISC_INT_ENAB (1 << 5)
	69	#define TCX_THC_MISC_INT (1 << 4)
	70	#define TCX_THC_MISC_INIT 0x9f
	71	#define TCX_THC_REV_REV_SHIFT 20
	72	#define TCX_THC_REV_REV_MASK 15
	73	#define TCX_THC_REV_MINREV_SHIFT 28
	74	#define TCX_THC_REV_MINREV_MASK 15
	75
	76	/* The contents are unknown */
	77	struct tcx_tec {
	78	volatile u32 tec_matrix;
	79	volatile u32 tec_clip;
	80	volatile u32 tec_vdc;
	81	};
	82
	83	struct tcx_thc {
	84	volatile u32 thc_rev;
	85	u32 thc_pad0[511];
	86	volatile u32 thc_hs; /* hsync timing */
	87	volatile u32 thc_hsdvs;
	88	volatile u32 thc_hd;
	89	volatile u32 thc_vs; /* vsync timing */
	90	volatile u32 thc_vd;
	91	volatile u32 thc_refresh;
	92	volatile u32 thc_misc;
	93	u32 thc_pad1[56];
	94	volatile u32 thc_cursxy; /* cursor x,y position (16 bits each) */
	95	volatile u32 thc_cursmask[32]; /* cursor mask bits */
	96	volatile u32 thc_cursbits[32]; /* what to show where mask enabled */
	97	};
	98
	99	struct bt_regs {
	100	volatile u32 addr;
	101	volatile u32 color_map;
	102	volatile u32 control;
	103	volatile u32 cursor;
	104	};
	105
	106	#define TCX_MMAP_ENTRIES 14
	107
	108	struct tcx_par {
	109	spinlock_t lock;
	110	struct bt_regs __iomem *bt;
	111	struct tcx_thc __iomem *thc;
	112	struct tcx_tec __iomem *tec;
	113	volatile u32 __iomem *cplane;
	114
	115	u32 flags;
	116	#define TCX_FLAG_BLANKED 0x00000001
	117
	118	unsigned long physbase;
119	unsigned long fbsize;
120
121	struct sbus_mmap_map mmap_map[TCX_MMAP_ENTRIES];
122	int lowdepth;
123
124	struct sbus_dev *sdev;
125	struct list_head list;
126	};
127
128	/* Reset control plane so that WID is 8-bit plane. */
129	static void __tcx_set_control_plane (struct tcx_par *par)
130	{
131	volatile u32 __iomem p, pend;
132
133	if (par->lowdepth)
134	return;
135
136	p = par->cplane;
137	if (p == NULL)
138	return;
139	for (pend = p + par->fbsize; p < pend; p++) {
140	u32 tmp = sbus_readl(p);
141
142	tmp &= 0xffffff;
143	sbus_writel(tmp, p);
144	}
145	}
146
147	static void tcx_reset (struct fb_info *info)
148	{
149	struct tcx_par par = (struct tcx_par ) info->par;
150	unsigned long flags;
151
152	spin_lock_irqsave(&par->lock, flags);
153	__tcx_set_control_plane(par);
154	spin_unlock_irqrestore(&par->lock, flags);
155	}
156
6ee7c152 TC	157	static int tcx_pan_display(struct fb_var_screeninfo var, struct fb_info info)
	158	{
	159	tcx_reset(info);
	160	return 0;
	161	}
	162
1da177e4 LT	163	/**
	164	* tcx_setcolreg - Optional function. Sets a color register.
	165	* @regno: boolean, 0 copy local, 1 get_user() function
	166	* @red: frame buffer colormap structure
	167	* @green: The green value which can be up to 16 bits wide
	168	* @blue: The blue value which can be up to 16 bits wide.
	169	* @transp: If supported the alpha value which can be up to 16 bits wide.
	170	* @info: frame buffer info structure
	171	*/
	172	static int tcx_setcolreg(unsigned regno,
	173	unsigned red, unsigned green, unsigned blue,
	174	unsigned transp, struct fb_info *info)
	175	{
	176	struct tcx_par par = (struct tcx_par ) info->par;
	177	struct bt_regs __iomem *bt = par->bt;
	178	unsigned long flags;
	179
	180	if (regno >= 256)
	181	return 1;
	182
	183	red >>= 8;
	184	green >>= 8;
	185	blue >>= 8;
	186
	187	spin_lock_irqsave(&par->lock, flags);
	188
	189	sbus_writel(regno << 24, &bt->addr);
	190	sbus_writel(red << 24, &bt->color_map);
	191	sbus_writel(green << 24, &bt->color_map);
	192	sbus_writel(blue << 24, &bt->color_map);
	193
	194	spin_unlock_irqrestore(&par->lock, flags);
	195
	196	return 0;
	197	}
	198
	199	/**
	200	* tcx_blank - Optional function. Blanks the display.
	201	* @blank_mode: the blank mode we want.
	202	* @info: frame buffer structure that represents a single frame buffer
	203	*/
	204	static int
	205	tcx_blank(int blank, struct fb_info *info)
	206	{
	207	struct tcx_par par = (struct tcx_par ) info->par;
	208	struct tcx_thc __iomem *thc = par->thc;
	209	unsigned long flags;
	210	u32 val;
	211
	212	spin_lock_irqsave(&par->lock, flags);
	213
	214	val = sbus_readl(&thc->thc_misc);
	215
	216	switch (blank) {
	217	case FB_BLANK_UNBLANK: /* Unblanking */
	218	val &= ~(TCX_THC_MISC_VSYNC_DIS \|
	219	TCX_THC_MISC_HSYNC_DIS);
	220	val \|= TCX_THC_MISC_VIDEO;
	221	par->flags &= ~TCX_FLAG_BLANKED;
	222	break;
	223
	224	case FB_BLANK_NORMAL: /* Normal blanking */
	225	val &= ~TCX_THC_MISC_VIDEO;
	226	par->flags \|= TCX_FLAG_BLANKED;
227	break;
228
229	case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
230	val \|= TCX_THC_MISC_VSYNC_DIS;
231	break;
232	case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
233	val \|= TCX_THC_MISC_HSYNC_DIS;
234	break;
235
236	case FB_BLANK_POWERDOWN: /* Poweroff */
237	break;
238	};
239
240	sbus_writel(val, &thc->thc_misc);
241
242	spin_unlock_irqrestore(&par->lock, flags);
243
244	return 0;
245	}
246
247	static struct sbus_mmap_map __tcx_mmap_map[TCX_MMAP_ENTRIES] = {
248	{
249	.voff = TCX_RAM8BIT,
250	.size = SBUS_MMAP_FBSIZE(1)
251	},
252	{
253	.voff = TCX_RAM24BIT,
254	.size = SBUS_MMAP_FBSIZE(4)
255	},
256	{
257	.voff = TCX_UNK3,
258	.size = SBUS_MMAP_FBSIZE(8)
259	},
260	{
261	.voff = TCX_UNK4,
262	.size = SBUS_MMAP_FBSIZE(8)
263	},
264	{
265	.voff = TCX_CONTROLPLANE,
266	.size = SBUS_MMAP_FBSIZE(4)
267	},
268	{
269	.voff = TCX_UNK6,
270	.size = SBUS_MMAP_FBSIZE(8)
271	},
272	{
273	.voff = TCX_UNK7,
274	.size = SBUS_MMAP_FBSIZE(8)
275	},
276	{
277	.voff = TCX_TEC,
278	.size = PAGE_SIZE
279	},
280	{
281	.voff = TCX_BTREGS,
282	.size = PAGE_SIZE
283	},
284	{
285	.voff = TCX_THC,
286	.size = PAGE_SIZE
287	},
288	{
289	.voff = TCX_DHC,
290	.size = PAGE_SIZE
291	},
292	{
293	.voff = TCX_ALT,
294	.size = PAGE_SIZE
295	},
296	{
297	.voff = TCX_UNK2,
298	.size = 0x20000
299	},
300	{ .size = 0 }
301	};
302
303	static int tcx_mmap(struct fb_info info, struct file file, struct vm_area_struct *vma)
304	{
305	struct tcx_par par = (struct tcx_par )info->par;
306
307	return sbusfb_mmap_helper(par->mmap_map,
308	par->physbase, par->fbsize,
309	par->sdev->reg_addrs[0].which_io,
310	vma);
311	}
312
313	static int tcx_ioctl(struct inode inode, struct file file, unsigned int cmd,
314	unsigned long arg, struct fb_info *info)
315	{
316	struct tcx_par par = (struct tcx_par ) info->par;
317
318	return sbusfb_ioctl_helper(cmd, arg, info,
319	FBTYPE_TCXCOLOR,
320	(par->lowdepth ? 8 : 24),
321	par->fbsize);
322	}
323
324	/*
325	* Initialisation
326	*/
327
328	static void
329	tcx_init_fix(struct fb_info *info, int linebytes)
330	{
331	struct tcx_par par = (struct tcx_par )info->par;
332	const char *tcx_name;
333
334	if (par->lowdepth)
335	tcx_name = "TCX8";
336	else
337	tcx_name = "TCX24";
338
339	strlcpy(info->fix.id, tcx_name, sizeof(info->fix.id));
340
341	info->fix.type = FB_TYPE_PACKED_PIXELS;
342	info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
343
344	info->fix.line_length = linebytes;
345
346	info->fix.accel = FB_ACCEL_SUN_TCX;
347	}
348
349	struct all_info {
350	struct fb_info info;
351	struct tcx_par par;
352	struct list_head list;
353	};
354	static LIST_HEAD(tcx_list);
355
356	static void tcx_init_one(struct sbus_dev *sdev)
357	{
358	struct all_info *all;
359	int linebytes, i;
360
361	all = kmalloc(sizeof(*all), GFP_KERNEL);
362	if (!all) {
363	printk(KERN_ERR "tcx: Cannot allocate memory.\n");
364	return;
365	}
366	memset(all, 0, sizeof(*all));
367
368	INIT_LIST_HEAD(&all->list);
369
370	spin_lock_init(&all->par.lock);
371	all->par.sdev = sdev;
372
373	all->par.lowdepth = prom_getbool(sdev->prom_node, "tcx-8-bit");
374
375	sbusfb_fill_var(&all->info.var, sdev->prom_node, 8);
6ee7c152 TC	376	all->info.var.red.length = 8;
	377	all->info.var.green.length = 8;
	378	all->info.var.blue.length = 8;
1da177e4 LT	379
	380	linebytes = prom_getintdefault(sdev->prom_node, "linebytes",
	381	all->info.var.xres);
	382	all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);
	383
	384	all->par.tec = sbus_ioremap(&sdev->resource[7], 0,
	385	sizeof(struct tcx_tec), "tcx tec");
	386	all->par.thc = sbus_ioremap(&sdev->resource[9], 0,
	387	sizeof(struct tcx_thc), "tcx thc");
	388	all->par.bt = sbus_ioremap(&sdev->resource[8], 0,
	389	sizeof(struct bt_regs), "tcx dac");
	390	memcpy(&all->par.mmap_map, &__tcx_mmap_map, sizeof(all->par.mmap_map));
	391	if (!all->par.lowdepth) {
	392	all->par.cplane = sbus_ioremap(&sdev->resource[4], 0,
	393	all->par.fbsize * sizeof(u32), "tcx cplane");
	394	} else {
	395	all->par.mmap_map[1].size = SBUS_MMAP_EMPTY;
	396	all->par.mmap_map[4].size = SBUS_MMAP_EMPTY;
	397	all->par.mmap_map[5].size = SBUS_MMAP_EMPTY;
	398	all->par.mmap_map[6].size = SBUS_MMAP_EMPTY;
	399	}
	400
	401	all->par.physbase = 0;
	402	for (i = 0; i < TCX_MMAP_ENTRIES; i++) {
	403	int j;
	404
	405	switch (i) {
	406	case 10:
	407	j = 12;
	408	break;
	409
	410	case 11: case 12:
	411	j = i - 1;
	412	break;
	413
	414	default:
	415	j = i;
	416	break;
	417	};
	418	all->par.mmap_map[i].poff = sdev->reg_addrs[j].phys_addr;
	419	}
	420
	421	all->info.flags = FBINFO_DEFAULT;
	422	all->info.fbops = &tcx_ops;
	423	#ifdef CONFIG_SPARC32
	424	all->info.screen_base = (char __iomem *)
	425	prom_getintdefault(sdev->prom_node, "address", 0);
	426	#endif
	427	if (!all->info.screen_base)
	428	all->info.screen_base = sbus_ioremap(&sdev->resource[0], 0,
	429	all->par.fbsize, "tcx ram");
	430	all->info.par = &all->par;
	431
	432	/* Initialize brooktree DAC. */
	433	sbus_writel(0x04 << 24, &all->par.bt->addr); /* color planes */
	434	sbus_writel(0xff << 24, &all->par.bt->control);
	435	sbus_writel(0x05 << 24, &all->par.bt->addr);
	436	sbus_writel(0x00 << 24, &all->par.bt->control);
	437	sbus_writel(0x06 << 24, &all->par.bt->addr); /* overlay plane */
	438	sbus_writel(0x73 << 24, &all->par.bt->control);
	439	sbus_writel(0x07 << 24, &all->par.bt->addr);
	440	sbus_writel(0x00 << 24, &all->par.bt->control);
	441
	442	tcx_reset(&all->info);
443
444	tcx_blank(0, &all->info);
445
446	if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
447	printk(KERN_ERR "tcx: Could not allocate color map.\n");
448	kfree(all);
449	return;
450	}
451
6ee7c152	452	fb_set_cmap(&all->info.cmap, &all->info);
1da177e4 LT	453	tcx_init_fix(&all->info, linebytes);
	454
	455	if (register_framebuffer(&all->info) < 0) {
	456	printk(KERN_ERR "tcx: Could not register framebuffer.\n");
	457	fb_dealloc_cmap(&all->info.cmap);
	458	kfree(all);
	459	return;
	460	}
	461
	462	list_add(&all->list, &tcx_list);
	463
	464	printk("tcx: %s at %lx:%lx, %s\n",
	465	sdev->prom_name,
	466	(long) sdev->reg_addrs[0].which_io,
	467	(long) sdev->reg_addrs[0].phys_addr,
	468	all->par.lowdepth ? "8-bit only" : "24-bit depth");
	469	}
	470
	471	int __init tcx_init(void)
	472	{
	473	struct sbus_bus *sbus;
	474	struct sbus_dev *sdev;
	475
	476	if (fb_get_options("tcxfb", NULL))
	477	return -ENODEV;
	478
	479	for_all_sbusdev(sdev, sbus) {
6ee7c152	480	if (!strcmp(sdev->prom_name, "SUNW,tcx"))
1da177e4 LT	481	tcx_init_one(sdev);
	482	}
	483
	484	return 0;
	485	}
	486
	487	void __exit tcx_exit(void)
	488	{
	489	struct list_head pos, tmp;
	490
	491	list_for_each_safe(pos, tmp, &tcx_list) {
	492	struct all_info all = list_entry(pos, typeof(all), list);
	493
	494	unregister_framebuffer(&all->info);
	495	fb_dealloc_cmap(&all->info.cmap);
	496	kfree(all);
	497	}
	498	}
	499
	500	int __init
	501	tcx_setup(char *arg)
	502	{
	503	/* No cmdline options yet... */
	504	return 0;
	505	}
	506
	507	module_init(tcx_init);
	508
	509	#ifdef MODULE
	510	module_exit(tcx_exit);
	511	#endif
	512
	513	MODULE_DESCRIPTION("framebuffer driver for TCX chipsets");
	514	MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
	515	MODULE_LICENSE("GPL");